--- Makefile.orig	2011-04-03 10:05:28.000000000 +0200
+++ Makefile	2011-04-03 09:54:31.000000000 +0200
@@ -21,7 +21,7 @@
 
 # Uncomment if you need the 4.4 BSD compatibility includes.
 #  -> required on Linux (and Win32)
-#COMPAT_INCS = -Iinclude
+COMPAT_INCS = -Iinclude
 
 # Maybe specify some specific compatibility options
 #  -> on AIX activate the BSD mode